I am open to testing it on either of my vehicles.
Before you do too much you would need to see a break down of cost over mpg improvement or over all drivability and how much driving it would take to recoup your investment.
Make sure if you go the lifepo4 route that you have one hell of a bms or procedure to keep the cells in check. 45 minute run time with your current pack would do a leg of my trip, then I hope its small enough to take in the office and plug in under my desk.
As a Enginer PHEV owner Ive read many people talk how the bms ruin vs helped their cells and the benefits or gains was all over the place depending on the nut behind the wheel, setttings used and wait time to get replacement or service.
BTW, those are 48 volt system if you choose to offer this as another option for the IMA guys.